bowers



(No Model:) I, 3 3 2 Snee-seet 1. W. L. GROUT & E. L. BOWERS; MACHINEFOR DRILLING METAL BLANKS.v

' No. 333,461. Patented-De'c.. 29, 1885.

(-No Model.) w .2 She'ets-Sheet 2.

W. L. ;GROUT & L. BOWRS.

MACHINE PORDRILLING METAL BLANKS. No. 888,461.

Patented Dec. 29,.1885.

UNITED STATES PATENT OFFICE;

vVVILLAM L. GROUT ND EDVVARD LUTHER BOVVERS, OF ORANGE, MASS.

MACHINE FOR DRILLING METAL BLANKS.

SPECIFICATION forming part of Letters Patent No. 333,461, dated December29, 1885.

Application filed September 7, 1885. Serial No. 176,752.

T0 all whom it may concern:

Be it known that we, WILLIAM L. GRoUT, and EDWARD L. BowERs, both ot'Orange, county of Franklin, and State of Massachusetts, have invented anImprovement in Machines for Drilling Metal Blanks, of which t-hefollowing description, in connection with the acrompanyingdrawings, is aspecification, like letters on the drawings representing like parts.

This invention has for its object the production of a machine wherebymetal blanks for bevel-gears, pinions, &c., may be drilled, the blanksbeing presented automatically.

In accordance with this invention the blanks to be drilled are placed ina magazine open at one side nearits lower end, and mounted on across-slide, and jaws monnted on the usnal turret or toolcarrier engagethe blank and hold it while the magazine is moved laterally, thuseffecting the removal of the blank laterally through the side of themagazine, and thereafter the jaws, by a movement of the carriage andturret, place the blank in a chuck connected with a rotating spindle,the Chuck rotating the blank While the carriage and turret are operatedto bring` the boring-tool into position to effect the boring of theblank.

Our invention in machines for drilling gear and other blanks consists,essentially, in a magazine slotted or cut out at its lower end for thewithdrawal of the blank, a reciprocating cam-slide to carry the saidmagazine, and a pair ofjaws to grasp and hold the said blank while themagazine is moved out of line with relation to the spindle and chuck,combined with a chuck and spindle to grasp and rotate the blank, andwith a tool to bore the blank, substantially as will be described.

Figure 1 represents a side elevation of a machine containing ourinvention. Fig. 2 is a section in the line x x, Fig. 1, looking to- Wardthe left; Fig. 3, an enlar-ged elevation of a part of the magazine; Fig.4, an enlarged detail of the lower end of the magazine; Fig. 5, a topview of part shown in Fig. 3. Fig. 6 is a side elevation of the jaws fortaking the blank from the magazine; Fig. 7, a front end view thereof;and Fig. 8, a top or plan view of parts shown in Fig. 6.

We have shown our invention as applied to the frame of what is cahed theHartford (No modch'r Screw-lllachinej7 the same being substantially asrepresented in 'United States Patent No. 223,255, dated January 6, 1880.The framework a, the main shaft b, the cam-carrying hub c, the cam-disk05, the crossslide o, the levers 02 to move the said crossslide, thevsliding carriage g, the guideways h, the Wormtoothed gearp, the shaft r,and the turrettl are all substantially as in the said patent. Thespindle az, made hollow to receive the jaws ai' of the chuck, and thehead (1*, sliding conical collara, and levers as, operated thereby toeffect the opening and closing of the chuck, are of nsual constructionand -not of our invention.

The hollow shaft forming part of the chuok contains a rod, D2, which isextended forward well into the Chuck. This rod has at its rear end anannularly-grooved hub, bi, which is entered by a finger, b*, `of aslide, b, having a pin, b, which-is acted upon at suitable times by eamsarrangedon the hub b7,attaehed to the main shaft b, the said cams beingso arranged as to cause the slide b5 to be moved forward at the propertime, as when it is desired to eject from the opened jaws of the chuckthev gear or other blank which has been bored 01' drilled, a suitablecam thereafter moving the slide b and rod b2 back into the positionshown in Fig. 1, the cam b8 in such figure being about to commence toact upon the pin b. The turret i has projecting radially from it adrill, of, by which to bore the hub or center of the gear or other blankd2,while the latter is held between the jaws of the chuek.

Upon the cross-slide o we have erected a magazine, 82, the same beingattached thereto by screws 63. This magazine is a Vertical bar or pieceof metal grooved from its upper end downward, as at 6*, to receive thegears or other blanks d, which are dropped therein one after the othertomore or less fill the said magazine, as shown by dotted lines, Fig. 2,the lowermost blank resting upon the shoulder 035. This magazine, nearits lower end, and substantially in line with the lowermost blanktherein, has one of its walls cut through, leaving a lateral passage orOutlet, fz, through which the gear or other blank may be takenlaterally, as will be described. The lower end of the magazine isprovided with a spring, fa,

IOO

x justing the adj usting-screws 94.

attached by a screw, ff, the end of the sprin working in a slot, fi, andacting to retain th lowermost gear or other blank in place unti it isdesired to take the gear or other blank from the magazine. The turretrotated in usual manner common to ordinary turret lathes, has attachedto it a rod, g, having two spring'jaws, 93, which may be made toapproach each other more or less closely by ad- (See Fig. 8.) These jawshave notches 2 2 of suitable shape to engage the jaws of the gear orother blank to be taken from the magazine.

The main shaft b is provided with suitable cams. or projectons, hz,attached to the disk 05, to operate upon the levers o2 0'z to move thecross-slide o with its attached magazine in one and then in the oppositedirection at the proper time. Normally the position of the cross-slide oand its attached magazine is at one side of the center of rotation ofthe chuck and its spindle; butjust before a gear or other blank, d, isto be taken from the magazine,

the lever o2 at the left of Fig. 2 will be oper-v ated to move thecross-slide o and place the.

magazine in line with the jaw qa, and the carriage g will then be movedforward far enough to spring the `jaw 93 over the opposite side of thegear or other blank al2 to be taken from the magazine, the ends of thesaid jaws passing through an opening madein the side of the magazinenext toward the turret. The jaws having grasped the gear or other blankdz between its members the lever o, at the right of Fig. 2, will beoperated to move the cross-slide 0 in the direetion of the arrow thereonin said figure, such movement taking place while the jaw yet grasps thegear i or other blank, and as a result the magazine mediately afterwardthe levers a, which are 'effective to close the chuck are operated togear or other blank, the turret is rotated sufficiently to place inoperative position the tool carried by it which is to be used to bore oract upon the gear or other blank, and thereafter the carriage is movedforward and its tool is presented to and made to act upon the revolvinggear or other blank, boring a hole through the same or its hub.

We claim- 1. In a machine for drilling gear'and other blanks, a magazineslotted or cut out at its lower side for the withdrawal therefrom of ablank, the reciprocating cross-slide to carry the said magazine, meansto move it, and a pair of jaws to grasp and hold the said blank whilethe magazine is moved out of line with relation tothe center of rotationof the spindle and chuck, combined with a chuck and spindle to grasp therotating blank, and with a tool to bore the blank, substantially asdescribed. w

2. In a machine for drilling gear and other blanks, the magazine slottedor cut out at its lower side for the Withdrawal therefrom of a blank,and the reciprocating cross-slide to carry the said magazine, and meansto move it, combined with a pair ofjaws to grasp and hold the said blankWhile the magazine is moved out of line with relation to the'center ofrotation of the spindle, substantially as described.

In testimony Whereof we have signed our names to this'specification inthe presenceof two subscribng witnesses.

WILLIAM L. GROUT. EDWARD LUTHER BOWERS.

Witnesses:

EDW. M. BUELL, G.. P. FIELD.

